Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations.

PhET provides fun, free, interactive, research-based science and mathematics simulations. We extensively test and evaluate each simulation to ensure educational effectiveness.

This simulation lets you see sound waves. Adjust the frequency or volume and you can see and hear how the wave changes. Move the listener around and hear what she hears.

‪Gravity and Orbits‬

Simulations All Sims Physics Math & Statistics Chemistry Earth & Space Biology Translated Sims Customizable Sims Studio About Studio Customizable Sims Start a Free Trial Purchase a …

By converting our sims to HTML5, we make them seamlessly available across platforms and devices. Whether you have laptops, iPads, chromebooks, or BYOD, your favorite PhET sims …

Simulations All Sims Physics Math & Statistics Chemistry Earth & Space Biology Translated Sims Customizable Sims Studio About Studio Customizable Sims Start a Free Trial Purchase a …

Simulations All Sims Physics Math & Statistics Chemistry Earth & Space Biology Translated Sims Customizable Sims Studio About Studio Customizable Sims Start a Free Trial Purchase a …

Now we wish to study in detail how each feature impacts student understanding. Integrating simulations into homework: Simulations have unique features that are not available in most …

Timothy Herzog, chemistry professor at Weber State University, discusses how he uses PhET simulations in his class and gives teaching examples that are relevant across grade levels and …